sellers



(No Manel.) l 2 sheets-sheen .1.

wsLLRs. r Steam Hammer.

No. 240,555. eluted Aprilvze, 188|.-

""'uv 4L'uu Wd@ Me @25g/ N-FETERs. Fumo-urnoamvnsn, WASHINGTON. n r2 (No Model.) -2 sheets-@sheet 2. f

W. SELLERS. Steam Hammer. No. 240,555. Patented April 26,1881'. v

UNITED 4STATES PATENT GFFICE.

WILLIAM SELLERS,` OF PHILADELPHIA, PENNSYLVANIA.

`sTEAlvl-l-lAls/HvlER.

SPECIFICATION forming part of Letters Patent No. 240,555, dated April 26, 1881. Application filed February r18, 1881i.` (No model.)

To all whom it may concern:

Be it known that I, WILLIAM SELLERs, of the city and county of Philadelphia, and State of Pennsylvania, have invented certain new and useful Improvements in Steam-Hammers, of which the following is a specification.

My present invention relates to that class of steam-hammers in which the steam-cylinder is secured between two uprights, and in which the hammer-bar is guided by bearings at the` through flanges on each side of the cylinder,

the bolts being placed closer-together at the lower end of the cylinder, where the greatest strain occurs; but with this arrangement these iianges must necessarily sustain all the strains in the plane ofthe uprights to which the steamhammer is subjected, and these are so severe that the anges and uprights are liable to break at this point.

It is one object of my present invention to strengthen the uprights and to relieve the iianges upon the cylinder from strains in the plane of the uprights, while the cylinder remains a guide and key between theuprights to retain them in proper position.

A further object of my invention is to clam p the cylinder between the uprights in suchmanner that the cylinder shall be more firmly held when the hammer is in service than when at rest; and to these ends my invention consists in providing a cylinder closed at its lower end to the size of the hammer-bar, and combining with this through-bolts extending from upright to upright through the closed end ofthe cylinder, by which the cylinder is clamped be-i tween the two uprights; andv it further consists in providing air-passages around these bplts, whereby their temperature is maintained below that of the cylinder during service, so that the bolts will be snbjected'to a higher strain Iand the uprights will be more iirmly clamped upon the cylinder when the hammer "is in operation than when it is at rest.

In the accompanying drawings, which form part of this speciication, Figure l, Sheet l, represents an elevation of a steam-hammer einbodyin g my present improvements. Fig. 2, Sheet 2, is a section through Fig. l on the line X X. Fig. 3 is a section through Fig. 2` on the line Y Y. Fig. 4 is a section through Fig. l on the line W W.

In all the figures similar letters refer to similar parts.

A represents the hammer-bar, with detachable and adjustable head D, as described in the hereinbefore-mentioned former patent.

B is the steam-cylinder.

C E are two uprights, the tlan ges upon which are extended and provided with projecting ribs on each side, so as to embrace the anges on i the cylinder. They are further secured to the cylinder by bolts F, as shown, accurately fitted in both flan ges, so as to take all vertical strains.

G G are two through-bolts, which pass through the lower and partially-closed end of the cylinder just outside of the stuffing-box for lower end of hammer-bar. They tit as to their ends in the uprights at H H, and are reduced in the middle, as shown, to a diameter about equal to the root of the thread 'on their outer ends, for the purpose of securing the greatest amount of elasticity without reducing their ultimate strength. The holes through which they pass in both cylinder and uprights are enlarged, as shown at J, thus leaving considerable space for the circulation of air around the bolts.4 The air enters at K in the lower end of the cylinder, and as it becomes heated passes out at L L in the uprights. The object of thus surrounding the bolts with a free circulation of air is to keep them relatively cooler than the cylinder, so that the expansion of the latter by the heat of the steam during use will cause the bolts to clamp the cylinder still more tightly between the uprights, and thus virtually bind the three castings-that is, cylinder and two uprightstogether as one solid piece. rIhe uprights are strongly re-enforced where thebolts G are attached by the rib M, and the strains and vibrations communicated to the uprights are thus distributed over the whole frame of 'the hammer, instead of being local- IOO Gr should pass through the cylinder as closely as possible to the outside of the hammer-bar below the piston, as the side strains which occur in forging are transmitted to the framin g through the bar, and hence the bolts, to be former patent.

Having now described my invention, what I claim as new, and desire to secure by Letters Patent, is-

l. In a steam-hammer, a steam-cylinder partially closed at its lower end and between two uprights, in combination with bolts which pass through the partially-closed end of the steamcylinder and the flanges of the uprights, substantially as and for the purposes Vset forth.

2. In a double upright hammer, substantially as described, the bolts G G, in combination with the air-passages K L, all arranged as and for the purposes set forth.

WM. SELLERS.

Witnesses:

J. SELLERS BANcRoF'r, JAS. C. BROOKS. 

